Attachment for a cleaning appliance



FIG. 1 is a top plan view of an attachment for a cleaning appliance showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a side view thereof;

FIG. 4 is a front view thereof; and,

FIG. 5 is a rear view thereof. 

We claim the ornamental design for an attachment for a cleaning appliance, as shown and described. 